Unlike Google, library databases can't understand an entire sentence. So you'll need to break your topic down into the most important ideas - the KEYWORDS.
Example Topic: Is acetaminophen more effective than other nonsteroidal anti-inflammatory drugs for pain relief in patients with osteoarthritis?
The specifics of your topic will matter when selecting sources, but for searching you only need the most essential components.
Keywords: acetaminophen, nonsteroidal anti-inflammatory drugs, pain relief, osteoarthritis
Putting terms in quotes (" ") will search for that exact phrase in that exact order.
"Blood Glucose Level" will bring up results specifically about blood glucose level as a concept. If you omit the quotes, you will get articles that simply mention the separate terms "blood" "glucose" and "level" somewhere in the title, abstract or article.
Most words have synonyms that mean the same, or very similar, things. For each keyword in your topic, try to come up with at least one synonym. Not all keywords will have synonyms, but many do!
Example:
Sometimes articles will include the abbreviations and acronyms and other times they will spell out the complete words. Do the same in your search.
Articles may refer to something by either its scientific or more common name. Include both in your search to make sure you're getting all of the possible results.
You can include words with many forms and endings into a single search term by using the asterisk (*) symbol. This will eliminate the need to type every form and ending of a single word.
Sometimes scholars use terms that you might not be familiar with, or which might mean something very specific within the discipline. While searching, look for unfamiliar terms or words that show up a lot. Try searching for those and see if you find more relevant sources.
Most library databases have search tools built in. Try some of these:
Look on the left and right of your search results, or for an "advanced search" page to find these tools - and more!
Use the operator AND to find only sources that mention both keywords.
This search will bring back fewer results than searching either keyword on its own, because both keywords must be present in order to show up in results.
Use the OR operator to expand your search with additional keywords.
This will find sources that include either word, so you'll see more results than by searching for just one keyword.
It's always helpful to use synonyms, like in this example. Some researchers may use one term, and some may use the other.
Use the "QUOTES" strategy to search for several words in a phrase.
This will bring back results that only use that exact phrase.
Are you seeing too many results that are simply not relevant to your topic?
Try using the NOT filter, and put those words in quotations which removes that keyword from your results list.